Service Manual 41
Electronic Parts Troubleshooting Guide
3. When cooling does not operate
Turn on Main Power
Operate "Cooling Mode( )" by setting the desired temperature of the
remote controller is less than one of the indoor temperature by 1°C at least.
When in Air Circulation Mode, Compressor/Outdoor Fan is stopped.
Check the sensor for indoor temperature is attached as close as to be
effected by the temperature of Heat Exchanger(EVA).
When the sensor circuit for indoor temperature and connector are in bad
connection or are not engaged, Compressor/Outdoor Fan is stopped.
• Check the related circuit of R02H(12.1K), R01H(1.0K), R04H(6.2K),
R03H(1.0K) (Indoor unit).
• Check the indoor temperature sensor is disconnected or not(About 10k
Ω
/ at 25°C).
Check Outdoor Unit
Check Relay(RY - COMP) for driving compressor.
• When the power(About AC220V/240V) is applied to the connecting wire
terminal support transferred to compressor, PWB Ass'y is normal.
• Check the circuit related to the relay.
Check point
COMP ON
COMP OFF
Below DC 1V
About DC12V
(app)
Between two pin of DC
part in relay for COMP
Summary of Contents for L2-C242GL0
Page 13: ...Service Manual 13 Dimensions 900 1 225 370 L3 C482LL0 ...
Page 19: ...Service Manual 19 Electronic Control Device Display P C B ASM ...
Page 21: ...Service Manual 21 Schematic Diagram L2 C362LL0 ...
Page 22: ...22 Multi Air Conditioner Schematic Diagram Outdoor Unit L3 C362LL0 ...
Page 23: ...Service Manual 23 Schematic Diagram L3 C482LL0 ...
Page 75: ...P No 3828A20156P January 2005 Printed in Korea ...